High lithium ionic conductivity in the garnet-type oxide Li7-X La3(Zr2-X, NbX)O12 (X=0-2)

被引：568

作者：

Ohta, Shingo ^{[1
]}

Kobayashi, Tetsuro ^{[1
]}

Asaoka, Takahiko ^{[1
]}

机构：

[1] Toyota Cent Res & Dev Labs Inc, Battery & Cells Div, Aichi 4801192, Japan

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 06期

关键词：

Solid electrolytes; All-solid-state lithium battery; Oxides; Ceramics; Lithium ion conductivity; CONDUCTORS; LI7LA3ZR2O12; BA;

D O I：

10.1016/j.jpowsour.2010.11.089

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Lithium garnet-type oxides Li7-XLa3(Zr2-X, Nb-X)O-12 (X=0-2) were synthesized by a solid-state reaction, and their lithium ion conductivity was measured using an AC impedance method at temperatures ranging from 25 to 150 degrees C in air. The lithium ion conductivity increased with increasing Nb content, and reached a maximum of similar to 0.8 mS cm(-1) at 25 degrees C. By contrast, the activation energy reached a minimum of similar to 30 kJ mol(-1) at the same point with X=0.25. The potential window was examined by cyclic voltammetry (CV), which showed lithium deposition and dissolution peaks around 0V vs. Li+/Li, but showed no evidence of other reactions up to 9V vs. Li+/Li. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：3342 / 3345

页数：4

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